Say I buy the 1 year or 2 year, do I have an option to extend the coverage once it's up?

if you buy the one year, dji will ping you close to the end of the first year and give you an opportunity to extend for another full year if you qualify.

The Saint Posted at 1-2 19:38
if you buy the one year, dji will ping you close to the end of the first year and give you an opportunity to extend for another full year if you qualify.

Thanks for clarifying.

Hi, there. Thank you for reaching out. Please kindly know the following information.
DJI Care Refresh + can be purchased when it meets all of the following criteria:
1) DJI Care Refresh (1-Year Plan) has already been purchased.
2) DJI Care Refresh (1-Year Plan) has not yet expired.
3) There is at least 1 product replacement left under DJI Care Refresh (1-Year Plan).

Since DJI Care Refresh + provides a second year of after-sales services, DJI Care Refresh + cannot be purchased if you already purchased the 2-Year Plan of DJI Care Refresh.